Baker&#39;s oven.



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BAKER=s OVEN.

SPECIFICATION :formingpart of Letters Patent No. 723,233, dated March 24, 1903.

Application filed August 30-I 1902. Serial No. 121,587. No model.)

cago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Bakers Ovens;` and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying draw ings, and to the figures of reference marked thereon, which form a part of this specification.

This invention relates to bakers ovens, and particularly to the means whereby thetemperature of the oven is regulated. It embracesa novel and improved construction of hot-air flues and also aset of cold-air flues for cooling the baking-cham ber when desired, the cold-air flues being separate and independent with respect to the hot-air flues. 4

Referring to the accompanying drawings, in which the inventionis illustrated, Figure 1 is a front elevation of the oven. Fig. 2 is a vertical cross-section thereof. Fig. 3 is a vertical longitudinal section. Fig. llisa horizontal section on the line 4 4 of Fig. 2. Fig. 5 is a half-section on the .line 5 5 of Fig. 1.

Referring specifically to the drawings, the oven is shown as built double, with two furnaces, (indicated `at1,) from `each of which the products of combustion travel backwardly to the rear of the oven in an arched flue'or combustion-chamber 15 and thence forwardly to the front of theoven ina flue 17, said lines being connected at`the back by a cross-flue 16. From the frontof the lines 17 the heat is carried` by uptakes 7 above the ovencha'm ber, which is indivcatedat 29. Thejuptakes 7 join cross-dues 20, which deliver the heat into a series of longitudinal flues 8, which extend over the oven-chamber from the front to the back'of the structure. From the flues 8 the heat is again returned forwardly through dues 2l above the hues 8, said fines being connected by npflues 13 at the back. The forward ends of the lues 21join cross-fines 22, which open into the lues 36, connecting with the stack. A damper 23 is placed at each ofsaid openings, operated by rod and handle 26, for the purpose of controlling the draft.

It will be seen that the heat passes back and forward under thebaking-chamber and also back and forward over the bakingchamber, which efficiently and economically heats the same. The dues 8 and 2l' open through the front wall of the oven, where they are closed byilue-stoppers, (indicated at 8a and 2l, respectively,) and the flues 17 are similarly closed by Stoppers 17?. This construction permits all of said flues to be easily cleaned. The course from the stoppersfis straight to the back of the oven, and a cleaning-tool will reach all parts of the fines. I consider this an improvement over constructions in which `the filles cannot be got at without difficulty.

The walls 10 of the oven are double and spacedl as indicated at 11, and cold air may be admitted to the space between the Walls through stoppered ducts (indicated at 3 4) at the front of the oven. Immediately under the floor'of the oven-chamber are a series of cold-air flues 28, which communicate with the space 11 in the rear wall, and these flues join at the front end in fines `3, leading to uptakes 32, which extend up through the side walls and above the dues 8 and 21 to connections (indicated at 32a) leading to the controlled by dampers 27, on opening which the direct draft passes up said flues to top liues 37a, leading to the stack. By Working these dampers in c'onnection with the'dampers 26 the heating of the oven-chamber can -be effectively controlled, particularly in view ofV the cold-air circulation described above.

In a bakersoven, the combination with a baking-chamber and furnace, of back-andforth heat-iiues extending longitudinally under the baking-chamber, back-and-forth heatlilies extending longitudinally above the baking-chamber, an uptake connecting the filles In testirnony Whei'eof I affix my signature below the chamber with the ues above the in presence of two witnesses. chamber, a. series of independent cold-air ues between bhe baking-chamber and the (JHARLES BOSEMER 5 hot-airluesthereunder-,uptakesleadingfrom Witnesses:

the cold-air fines to the stack, and dampers NELLIE FELTsKoG,

for all of said fines. WM. J. ROBINSON. 

